import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 86184
 * Date: 2023-01-26
 * Time: 14:01
 */
public class subject {

    //3. 判断一个年份是否为闰年
    public static void main(String[] args) {
        //Scanner 工具   System.in  键盘
        Scanner scanner = new Scanner(System.in);
        int year = scanner.nextInt();
        if (year % 400 == 0 || (year % 100 != 0 && year % 4 == 0)) {
            System.out.println("闰年");
        } else {
            System.out.println("不是闰年");
        }
    }


    //2. 判断一个数字是正数，负数，还是零
    public static void main2(String[] args) {
        int a = 10;
        if (a > 0) {
            System.out.println("正数");
        } else if (a == 0) {
            System.out.println(0);
        } else {
            System.out.println("负数");
        }
    }


    //1. 判断一个数字是奇数还是偶数
    public static void main1(String[] args) {
        int num = 10;
        if (num % 2 == 0) {
            System.out.println("偶数");
        } else {
            System.out.println("奇数");
        }
    }
}
